Resize Image for Instagram — Free Online Tool
Resize your photos to perfect Instagram dimensions instantly. Square posts, portrait posts, landscape, stories and reels — all in one place. No upload, 100% private.
Drop your image here
or click to browse · JPG, PNG, WEBP
Max 15MB
💡 Tip: Press Ctrl+V / Cmd+V to paste an image directly
Instagram image sizes for 2026
| Format | Dimensions | Aspect Ratio |
|---|---|---|
| Square Post | 1080 × 1080 px | 1:1 |
| Portrait Post | 1080 × 1350 px | 4:5 |
| Landscape Post | 1080 × 566 px | 1.91:1 |
| Story / Reel | 1080 × 1920 px | 9:16 |
| IGTV Cover | 420 × 654 px | 1:1.55 |
How to resize an image for Instagram posts and stories
Select your target format above (Square, Portrait, Story, etc.), then upload or paste your image. Choose Fill (Crop) mode to crop your image to perfectly fill the Instagram frame — this is the most common choice for social media since it removes empty borders. Use Fit mode to keep your full image with a background added — good for design images where cropping would remove important content.
Square vs Portrait vs Story — which to choose?
The square 1080×1080 format takes up the most space in the feed for horizontal or square images. Portrait 1080×1350 is the optimal format — it occupies the maximum vertical feed space allowed, which results in higher visibility and engagement. Stories (1080×1920) are full-screen immersive formats. For Reels, the same 1080×1920 dimensions apply.